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课时1:Physics Unit2 3.1 The Language of Waves
41:12
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课时2:Physics Unit2 3.2 The Behaviour of Waves
40:45
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课时3:Physics Unit2 3.3 Light and Sound
36:20
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课时4:Physics Unit2 4.1 Electrical Quanatities
43:00
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课时5:Physics Unit2 4.2 Complete Electrical Circuits
25:31
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课时6:Physics Unit2 5.1 What is Light
55:04
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课时7:Physics Unit2 5.2 Spectra and Energy Levels in Atoms
21:20
工作时间: 8:30 - 17:30
培诺教育: 4008118532